6868609390 has 32 divisors (see below), whose sum is σ = 12521972736. Its totient is φ = 2712277920.

The previous prime is 6868609339. The next prime is 6868609411. The reversal of 6868609390 is 939068686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1550719 + ... + 1555141.

It is an arithmetic number, because the mean of its divisors is an integer number (391311648).

Almost surely, 2^6868609390 is an apocalyptic number.

6868609390 is a deficient number, since it is larger than the sum of its proper divisors (5653363346).

6868609390 is a wasteful number, since it uses less digits than its factorization.

6868609390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6384.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The square root of 6868609390 is about 82877.0739710325. The cubic root of 6868609390 is about 1900.8868795879.

The spelling of 6868609390 in words is "six billion, eight hundred sixty-eight million, six hundred nine thousand, three hundred ninety".